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Bygheart Music API

Use your iamvision.tech API key (bgh_...) to generate songs programmatically. Pro plan: 200 credits/month, 30/day cap, up to 60 unused credits roll over. Ultimate: unlimited. Free: blocked. Quota is shared across the website and the API. Failed generations are refunded automatically.

Credit cost per generation
Bygheart Melody Fast โ€” 1 credit
Bygheart Studio Pro โ€” 2 credits
Bygheart Studio Max โ€” 4 credits
Bygheart Composer Lab โ€” 4 credits
Get an API key
Manage keys at /api-keys.html. Free tier keys are blocked from this API.
Upgrade to Pro
Base URL
https://iamvision.tech/bygheartsong/api
1. Submit a song โ€” POST /release_task
curl -X POST https://iamvision.tech/bygheartsong/api/release_task \
  -H "Authorization: Bearer bgh_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "female lead vocal, melodic sung pop delivery, epic modern pop, dark dance pop, stadium anthem, glossy radio production",
    "lyrics": "[Verse]\nI got a new face in the rearview\n[Chorus]\nI go god mode after midnight",
    "model": "bygheart-studio-pro",
    "lm_model_path": "",
    "thinking": false,
    "use_format": false,
    "vocal_language": "en",
    "audio_duration": 180,
    "audio_format": "mp3",
    "batch_size": 1,
    "seed": -1,
    "use_random_seed": true,
    "guidance_scale": 1.0,
    "task_type": "text2music"
  }'
Returns {"data":{"task_id":"...","status":"queued"}}.
2. Poll for result โ€” POST /query_result
curl -X POST https://iamvision.tech/bygheartsong/api/query_result \
  -H "Authorization: Bearer bgh_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "task_id_list": ["TASK_ID_FROM_STEP_1"] }'
When status: 1, result[0].file contains the audio path. Stream it with the audio endpoint below.
3. Download the audio โ€” GET /v1/audio
curl -L -H "Authorization: Bearer bgh_YOUR_KEY" \
  "https://iamvision.tech/bygheartsong/api/v1/audio?path=/abs/path/from/result.mp3" \
  -o song.mp3
Models
  • bygheart-melody-fast โ€” fast iteration, 1 credit/song
  • bygheart-studio-pro โ€” recommended daily driver, 2 credits/song
  • bygheart-studio-max โ€” highest detail (50 steps + 4B LM), 4 credits/song
  • bygheart-composer-lab โ€” edit / repaint workflows, 4 credits/song
Errors
  • 401 Unauthorized โ€” missing/invalid bgh_ key.
  • 403 pro_tier_required โ€” your plan must be Pro or higher.
  • 429 โ€” rate limit. Slow down or upgrade.

My Library

Your saved takes, synced securely to your account.

๐ŸŽผ Songwriting Guide
Full reference: prompts, lyric structure, vocal style, modes, every advanced control, examples. Opens in a new tab.
Open guide โ†’
For exact lyrics/vocals: use Custom mode, paste lyrics, and leave both switches off. For Simple mode with no lyrics, Lyric-aware planning can let the model invent vocals; Instrumental forces no vocals.
Inspiration
Advance Options โ–พ
General
โฑ Duration (10s-600s) Auto
๐ŸŽต Tempo (30-200 BPM) Auto
๐„ฟ Time signature (2,3,4,6) Auto
โ™ฌ Key Auto
โŠ˜ Negative styles
Thinking
CreativeRobust
Vocal Style (suggestions, not guarantees)
โš™ Expert controls (defaults are fine for most songs)
LM tuning (only used with Lyric-aware planning)
Output
Idle

Queue

Latest result